This listing is for 8 filters.Gradient Density Sediment CartridgeEach Cartridge Has 3 LayersIncreased Dirt Holding Capacity1 Micron Rating1 Micron Removal of Dirt, Rust & SedimentIndustry Standard Size 10" × 2.5" Sediment CartridgeFeatures & Benefits:Gradient Density, Multi-Layered, Melt Blown Sediment Filter Cartridge.Larger particles are trapped in the outer layers, smaller particles penetrate deeper.Greater dirt holding ability and longer life than non-layered cartridges.Thermally bonded polypropylene micro fibers for purity and chemical compatibilityContains no binders, agents, solvents, antistatic materials or wetting agentsMeets FDA requirements for food and beverage contactNo leachables or extractables to contaminateNo surface binders to reduce flow and increase change-out frequencyCartridges are individually shrink wrappedMicron rating is molded into cartridgeAvailable in wide range of lengths and micron ratingsApplications:Whole House Sediment FiltrationReverse Osmosis PrefiltrationFood and beveragesOil and gasFine chemicalsElectronicsMetal finishingPulp and paper